package 预习的;

public class PPT例子03 {

        public static void main(String[] args) {
            int[] arr = {10, 20, 30};
            f2(arr);
            for (int i = 0; i < arr.length; i++) {
                System.out.println(arr[i]);
            }
        }

        public static void f2(int[] arr) {
            arr[0] = 100;
            arr[1] = 200;
            arr[2] = 300;
        }
}
